How to Order Rows by Group Sum in SQL

How to Order Rows by Group Sum in SQL

Are you looking for an efficient way to order rows by group sum in SQL? You've come to the right place! In this post, we'll discuss how to use the GROUP BY and ORDER BY clauses to order rows by group sum in SQL. 🤓

The Solution

The solution is to use the GROUP BY and ORDER BY clauses together. The GROUP BY clause allows you to group rows by a particular column or set of columns. The ORDER BY clause then allows you to order the grouped rows by the sum of a particular column. For example, if you wanted to order the rows in a table by the sum of the amount column, you would use the following query:

SELECT * FROM table_name
GROUP BY group_column
ORDER BY SUM(amount) DESC;

Examples

Let's look at a few examples of how this can be used. Suppose you have a table called transactions with the following data:

name      amount
----------------
John      10
Jane      20
John      30
Bob       40

If you wanted to order the rows in this table by the sum of the amount column, you would use the following query:

SELECT * FROM transactions
GROUP BY name
ORDER BY SUM(amount) DESC;

This query would return the following result:

name      amount
----------------
Bob       40
John      40
Jane      20

Additional Info

The GROUP BY and ORDER BY clauses are supported by most major databases, including MySQL, PostgreSQL, and SQL Server. However, the syntax may vary slightly depending on the database you are using. For more information, check out the documentation for your particular database. 🤓